The total number of alignment errors per airplane in a sample of 50 planes.
#Original Source: Grant and Leavenworth.
7 6 6 7 4 7 8 12 9 9 8 5 5 9 8 15 6 4 13 7 8 15 6 6 10 7 13 4 5 9 3 4 6 7 14 18
11 11 11 8 10 8 7 16 13 12 9 11 11 8
